Work-support for leather-working machines.



No. 824,848. BATENTED JULY 3, 1906. H. s. GORWIN.

WORK SUPPORT FOR LBATHER'WORKINGMACHINES. APPLICATION FILED MAR.18.1904.

UNITED STATES PATENT OFFICE.

l HAMILTON S. CORWIN, OF PEABODY, MASSACHUSETTS, ASSIGNOR, BY

MESNE ASSIGNMENTS, TO THE TURNER TANNING MACHINERY 'COM- PANY, OFBOSTON, MASSACHUSETTS, A CORPORATION OF MAINE.

WORK-SUPPORT FOR LEATHER-WORKING MACHINES.

Patented July 3, 1906.

1'0 alt w/wm it may concern.-

Be it knownthat I, HAMILTON S. CoRwIN, a citizen of the United States,residing in Peabody, in the county of Essex and State of Massachusetts,have invented an Improvement in WVork-Supports for Leather-WorkingMachines, of which the following .descrip tion, in connection with theaccompanying drawings, is a specification, like characters on thedrawings representing like parts.

This invention relates to a work-support or bed employed in machines fortreating hides, skins, and leather and is herein shown as embodied inthe form of a roll. The invention is particularly well adapted for usein machines employed for fleshing hides and skins, an example of such amachine being shown and described in United States Patent No. 696,588,dated April 1, 1902.

Prior to this invention hides or skins designed for use in thesole-leather trade have been fleshed by hand, owing to the pronouncedirregularities in the thickness of the hides. Attempts have been made toflesh hides designed for the sole-leather trade with machines; butheretofore, so far as I am aware, such attempts have not beensatisfactory to the trade, owing to the fact that if the machine isadjusted for the thin parts of the hide it removes too much of thethicker portions of the hide, and if adjusted for the thicker portionsof the hide it does not treat or flesh the thin portions of the hide.For this reason hides designed for use as soleleather are now commonlyfleshed by hand.

The present invention has for its object to provide a support of suchcharacter as will be described as will enable hidesfor soleleather to befleshed with a machine, and to this end the support or bed is providedwith a layer of rubber or other yielding material which is composed ofsections, zones, or parts of different degrees of resiliency or density,so that the thicker portions of the hide can be forced into the supportor bed farther than the thinner portions of saidhide, and thereby enablethe surface of the hide being treated to be cut or otherwise acted uponby the operating-tool to substantially the same depth, thus insuringuniform or substantially uniform treatment of the hide throilighout itssurface without waste of ma teria opposite ends.

These and other features of this invention will be pointed out in theclaims at the end of this specification.

Figure 1 is an elevation of a bed-roll embodying this invention; Fig. 2,a longitudinal section of the bed-roll shown in Fig. 1, and Fig. 3 alongitudinal section of a modified form of bed-roll.

Referring to the drawings, a represents a cylinder or roll of metal orother suitable material which is provided with the heads 5, having thejournals 0. The cylinder a has vulcanized or otherwise secured to it acovering or layer (1, of rubber or like yielding material, which inaccordance with this invention is provided with or composed of sectionsor zones of different resiliency or density, which are conventionallyrepresented in Fig. 1 by the transverse lines 6 and in Figs. 2 and 3 bythe difference in the section-lines, In Fig. 2 the rubber covering (1 isrepresented as composed of five sections, the two outside or endsections 4 being of the same density or resiliency, which may be assumedto be the least resilient, the center section 5 the most resilient, andthe intermediate sections 6 of an intermediate density or resiliency. Inother words, the rubber bed or covering d, as shown in Fig. 2, is thesoftest at the center and increases in hardness toward its Such ayielding bed or support is especially designed for use with hides whichare thickest at their center portion or backbonefor instance, cowhidesasthe portion of the yielding bed near the center is capable of yieldingto a greater extent than the ends, with the result that when the hide isengaged by the operating-tool cooperating with the yielding support orbed, usually a bladed roll, the thicker portions of the hide effect agreater compression of the softer portions of the yielding bed than dothe thinner portions of the hide, and the thicker portions of the hideare thus moved away from the operating-tool such a distance as willbring the surface of the hide which is engaged by the operating-tool orbladed roll into substantially the same plane, with the result that theoperating-roll effects a cut of substantially the same depth throughoutthe width of the hide, and the latter is thereby fleshed in a uniformmanner without waste of material.

as shown in. Fig. 3 is used, in which the roll 5 is harder at the centerand soltest at the ends.

I have herein shown the yielding support as provided with sections orzones of three degrees of density or elasticity, and while I may preferthis arrangement do not desire to limit my invention in this respect, asit is evident that the number of sections or Zones may be varied to suitany particular work.

To enable the invention to be readily understood, I have represented theZones or sections as cuite prominent; .but it will be understood thatthe sections or zones of different density or elasticity may be mergedwith one another so gradually as to render it practically impossible totell the line of demarcation when the yielding support is made in onepiece. I have herein shown the yielding support in the form of a roll;but I do not desire to limit my invention in this respect, as it may bemade in other forms such, for instance, as the segment of a drum orroll, or it may be made in the form of a straight or flat support.

I claim- 1. As an improved article of manufacture,

a roll having a covering of rubber or like A HAMILTON S. OORWINl/Vitnesses'.

A. M. WILsON, S. G. H. FITCH.

